Outliner locked me out, layers highlighted green, and many layers are hidden cant unhide
There aren't any layers in Outliner, it shows object datablocks present in your scenes (in this case in the parented hierarchy). 

Highlighted in green means results of the search:

 

Above green highlight shows everything which fits letter "M" in the search (which can be anywhere in the word).

Remove the search keywords and search filter won't be applied anymore.

Aside from that some objects in your scene are set as non-editable (White Arrows to the right from the object datablock name), which means they will be visible but not selectable. You might need to turn them on for further editing.